/*
 * OREKIT-X
 * Copyright 2002-2008 CS Communication & Systemes
 * 
 * Parts of this software package have been licensed to CS
 * Communication & Systemes (CS) under one or more contributor license
 * agreements.  See the NOTICE file distributed with this work for
 * additional information.
 *  
 * This is an experimental copy of OREKIT from www.orekit.org.
 * Please use the original OREKIT from orekit.org for normal work
 * unrelated to this research project.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you
 * may not use this file except in compliance with the License.  You
 * may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied.  See the License for the specific language governing
 * permissions and limitations under the License.
 */
package ore.time;

import java.util.Map;

import ore.errors.OrekitException;


/**
 * UTC versus TAI history contains time scales offsets.
 * 
 * @author Luc Maisonobe
 */
public class UTCTAIHistory
    extends java.util.TreeMap<DateComponents, Integer>
{

    protected static UTCTAIHistory Instance;

    public final static UTCTAIHistory Instance(){
        if (null != Instance)
            return Instance;
        else
            throw OrekitException.createIllegalStateException(null);
    }



    protected UTCTAIHistory() {
        super();
    }

}
